w91030b Winbond Electronics Corp America, w91030b Datasheet - Page 24

• Manufacturer Part Number: w91030b
• Description: Calling Line Identifier
• Manufacturer: Winbond Electronics Corp America

Notes:
1. The CPE designer may choose to wake up the W91030B only after the end of the RNGON signal to conserve power for a
2. The CPE designer may choose to set FSKE to be always high while the CPE is on-hook when the FSK signal is expected.
3. The microcontroller places the W91030B in a sleep condition after the last byte (check sum) has been decoded or FCDN has
4. The W91030B may not be woken up at this ring signal after the FSK data has been processed.
5. If the W91030B has been woken up at the 2nd ring, the microcontroller times out if FCDN is not activated and then puts the
battery operated CPE. The delay from RNGON to SLEEP (and FSKE) is the reactive time of the microcontroller.
become inactive.
W91030B into a sleep condition.
Tip/Ring
INTN
RNGON
SLEEP
FSKE
FCDN
FDRN
DCLK
DATA
Figure 9-3. Input and Output Timing of Bellcore On-hook Data Transmission
1st Ring
Note 1
Note 2
A
B
A = 2 sec typical
B = 250 500 mS
C = 250 mS
D = 150 mS
E = Depends on data length
MAX C + D + E = 2.9 to 3.7 sec
F
Ch. seizure Mark
200 mS
...101010...
C
...
...
D
- 24 -
Message
Data
E
...
...
Note 3
F
Preliminary W91030B
2nd Ring
Note 4
Note 5